From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
Valdis.Kletnieks@vt.edu
Sent: Thursday, April 14, 2005 4:35 PM
To: Luke Youngblood
Cc: 'Dan Lockwood'; nanog@merit.edu
Subject: Re: Anyone familiar with the SBC product lingo?>
> SONET simply means you are on a Sonet ring: Two redundant
connections to
> the central office. If someone gets a little crazy with a
backhoe your line
> is guaranteed to stay up (ask about SLAs, and make sure
they will refund
> part of your monthly bill if you have an outage). That's
why it costs over
> twice as much.And remember to ask questions - make sure they've actually got the two
connections routed differently. Remember that if the backhoe
hits the conduit,
*all* the fiber pairs go - and if both runs were in the same
conduit, you're
still dead....(Anybody here *NOT* seen cases where the 2 fibers leave the
building on opposite
sides, go down different streets - and rejoin 2 miles down
the way because
there's only one convenient bridge/tunnel/etc over the river,
or similar?)
It's rare that the pairs *don't leave the building in a lateral
to the loop. Once you're into the metro, you're usually okay, but
yes, you need to check.
Most buildings only have 1 zero manhole so it's not feasible
to get a second diversified lateral and it doesnt make sense
to lease a second lateral on the same pathway.
-M<\\